COROS Pace 4 – Black Silicone Band Built for athletes who demand speed, accuracy, and reliability, the COROS Pace 4 delivers next-generation performance in an ultralight, race-ready design. Whether you’re chasing a personal best, training for a marathon, or navigating new trails, the Pace 4 combines advanced training intelligence with a vibrant AMOLED display—all in a watch that feels almost weightless on your wrist. Powered by a redesigned optical heart rate sensor, dual-frequency GPS, and intuitive voice-enabled features, the Pace 4 helps you train smarter and recover stronger. With industry-leading battery life and a comprehensive suite of performance metrics, it’s built to match your ambition—mile after mile. Specifications Display: 1.2” AMOLED touchscreen, 390 × 390 resolution, mineral glass Dimensions: 43.4 × 43.4 × 11.8 mm (13.6 mm including PPG) Weight: 40 g with silicone band Battery Life: Up to 41 hours (High Accuracy GPS) Up to 31 hours (Always-On Display with GPS) Up to 19 days (Daily use) Up to 6 days (Always-On Display, daily use) Charging Time: ~1.5 hours (15°C – 45°C) Water Resistance: 5 ATM Operating Temperature: -20°C to 50°C Materials: High-strength polymer bezel and back, silicone band Navigation: Breadcrumb trails, turn-by-turn directions, waypoints Sensors: Optical heart rate, SpO₂, barometric altimeter, compass, accelerometer, gyroscope, ECG Connectivity: Bluetooth, Wi-Fi Satellite Systems: GPS, GALILEO, GLONASS, BeiDou, QZSS Music Storage: 4 GB on-device Band Compatibility: 22 mm quick-release bands Key Features 1.2” 2.5D AMOLED display with crisp 390 × 390 resolution Ultralight design at just 40 g with silicone band Dual-frequency GPS (L1 + L5) for exceptional positioning accuracy Redesigned optical heart rate sensor for improved tracking Up to 41 hours of GPS battery life (31 hours with Always-On display) Voice training logs and Voice Pins for hands-free feedback Advanced recovery tools including HRV, sleep tracking, and recovery timer 4 GB on-device music storage with Bluetooth headphone support Real-time weather updates plus storm and altitude alerts Custom workouts and free marathon training plans Seamless integration with Strava, Apple Health, TrainingPeaks, and more Water-resistant to 5 ATM for swimming and wet conditions